1111219989 has 8 divisors (see below), whose sum is σ = 1616320032. Its totient is φ = 673466640.

The previous prime is 1111219987. The next prime is 1111220009. The reversal of 1111219989 is 9899121111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1111219989 - 2¹ = 1111219987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111219989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111219987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16836634 + ... + 16836699.

It is an arithmetic number, because the mean of its divisors is an integer number (202040004).

Almost surely, 2^1111219989 is an apocalyptic number.

It is an amenable number.

1111219989 is a deficient number, since it is larger than the sum of its proper divisors (505100043).

1111219989 is a wasteful number, since it uses less digits than its factorization.

1111219989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33673347.

The product of its digits is 11664, while the sum is 42.

The square root of 1111219989 is about 33334.9664616600. The cubic root of 1111219989 is about 1035.7779984379. Note that the first 3 decimals are identical.

The spelling of 1111219989 in words is "one billion, one hundred eleven million, two hundred nineteen thousand, nine hundred eighty-nine".